Fix: add operator_csv_modifications_url to schema
Fix: add operator_csv_modifications_url to schema

User params can be validated by schema, adding there new param

* CLOUDBLD-3976

Signed-off-by: Martin Bašti <388356a3851efe39ff0604de6d8fb2e16e10a0b7@redhat.com>

fr34k8/atomic-reactor,projectatomic/atomic-reactor,fr34k8/atomic-reactor,projectatomic/atomic-reactor